Although since the Euro was adopted two years ago prices have gone up, but wages have stayed the same. A basic flat somewhat close to the city centre would be at least €300/mo, and a good white collar wage maybe €1000/mo.

The situation of Berlin is of course quite unique because of the wall.

Also, maybe artists not only need cheap rents, but also wealthy patrons. I don't know.

Of course if you're white or really attractive, these are non-issues.